04/04/2014 10:43 am ET | Updated Apr 04, 2014

Celebrities React To David Letterman's Retirement News, Share Support And Admiration

While taping "The Late Show" on Thursday, April 3, longtime host David Letterman casually announced he will retire in 2015. Many celebrities who crossed paths with Letterman in his 33 years behind the desk took to Twitter to share feelings, photos and anecdotes:

.@letterman You are a class act that will be truly missed #legend pic.twitter.com/iS6UFVawlp

— Sarah Michelle (@RealSMG) April 4, 2014

I'm honored to have 'hung out' with you as many times as I have @Letterman . Won't be the same without you my friend! pic.twitter.com/StFYMeVvHK

— Kaley Cuoco Sweeting (@KaleyCuoco) April 4, 2014

Maybe it's futile, but here goes.
@Letterman cannot retire.

Send him this:

— ABFoundation (@ABFalecbaldwin) April 4, 2014

Just had great time with@letterman.
On Friday. No one like him.

— Billy Crystal (@BillyCrystal) April 3, 2014

Wow, @Letterman retiring. He's been a significant force in my "later" career. Thanks, Dave!

— Steve Martin (@SteveMartinToGo) April 3, 2014

David @Letterman announced he's retiring in 2015. It's been 31 incredible years. Television won't be the same without you, Dave.

— Ellen DeGeneres (@TheEllenShow) April 3, 2014

Obvi will miss Letterman and his gorgeous tooth scenario/general brilliance

— Lena Dunham (@lenadunham) April 3, 2014

Haha! My phone has been blowin up w 2 words "Letterman retiring" I luv that man.RT @The1stTaste: Congrats on taking over 4 Letterman!

— Kathy Griffin (@kathygriffin) April 4, 2014

First Jeter and now Letterman. Damn. I gotta get my kid to NY this summer to meet those guys so we'll have something in common.

— Tom Arnold (@TomArnold) April 4, 2014

There's a tear under the CBS eye! David Letterman - Simply The Best!!!

— Arsenio Hall (@ArsenioHall) April 3, 2014

David @Letterman is the best there is and ever was.

— Jimmy Kimmel (@jimmykimmel) April 3, 2014

I can't believe David Letterman has announced his retirement--he is a great guy! @Letterman

— Donald J. Trump (@realDonaldTrump) April 3, 2014

Letterman broke the mold for not just Late Night, but TV itself. He's a vanguard- his influence is seen all over the dial today. What a run!

— Andy Cohen (@Andy) April 3, 2014

Mr. Letterman, you have always been the best. I've had more fun on your show and you've been a class guy all the way. Enjoy ur final days.

— jason alexander (@IJasonAlexander) April 3, 2014

For me as a guest, to make Dave laugh was the modern day equivalent of making Carson laugh. #Lettermanisleaving

— Jeff Daniels (@Jeff_Daniels) April 3, 2014

"Y'know who does a wonderful David Landerman impersonation? Joe Piscopo." -- the CBS exec they can't fire because of nepotism

— Patton Oswalt (@pattonoswalt) April 3, 2014